PRESBYOND Laser Blended Vision from ZEISS is an advanced method for treating patients with age-related loss of accommodation, also known as presbyopia. Presbyopia is the eye condition which causes people aged 45 and older to need reading glasses. If you are experiencing any of the following symptoms you are likely to be suffering from presbyopia. Difficulty reading small print such as on your magazines, in newspapers or phone. Eye strain when reading for long periods. The need to hold your book further away to see it clearly. Difficulty keeping a clear focus when reading. Specially designed for the needs of the modern refractive surgeon, the MEL 90 incorporates proven safety as well as individually configurable options.